Cherri Posted August 23, 2010 Share Posted August 23, 2010 Hello I have a 99 RX300 with 187,k miles my check engine light came on so I had it tested it gave me a Bank 1 P1133 code, can someone tell me what this means and can I replace this myself, if so where can i find the parts? Thank you Quote Link to comment Share on other sites More sharing options...
joe913 Posted August 23, 2010 Share Posted August 23, 2010 Hello I have a 99 RX300 with 187,k miles my check engine light came on so I had it tested it gave me a Bank 1 P1133 code, can someone tell me what this means and can I replace this myself, if so where can i find the parts? Thank you The attached document may be helpful in tracking down the problem. Good luck! SFI (SF) file.pdf Quote Link to comment Share on other sites More sharing options...
code58 Posted August 25, 2010 Share Posted August 25, 2010 Hello I have a 99 RX300 with 187,k miles my check engine light came on so I had it tested it gave me a Bank 1 P1133 code, can someone tell me what this means and can I replace this myself, if so where can i find the parts? Thank you The attached document may be helpful in tracking down the problem. Good luck! Joe- since the P1133 code (Lexus specific) says "Air/Fuel ratio sensor circuit response malfunction, bank1, sensor1", I was just curious why you referenced the file that you did? Quote Link to comment Share on other sites More sharing options...
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